421137 has 12 divisors (see below), whose sum is σ = 617604. Its totient is φ = 276480.

The previous prime is 421133. The next prime is 421147. The reversal of 421137 is 731124.

It can be written as a sum of positive squares in 2 ways, for example, as 318096 + 103041 = 564^2 + 321^2 .

It is not a de Polignac number, because 421137 - 2² = 421133 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421137.

It is not an unprimeable number, because it can be changed into a prime (421133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337 + ... + 977.

It is an arithmetic number, because the mean of its divisors is an integer number (51467).

2⁴²¹¹³⁷ is an apocalyptic number.

It is an amenable number.

421137 is a deficient number, since it is larger than the sum of its proper divisors (196467).

421137 is a wasteful number, since it uses less digits than its factorization.

421137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 717 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 421137 is about 648.9506915013. The cubic root of 421137 is about 74.9562411405.

It can be divided in two parts, 4 and 21137, that multiplied together give a palindrome (84548).

The spelling of 421137 in words is "four hundred twenty-one thousand, one hundred thirty-seven".